85170227 has 2 divisors, whose sum is σ = 85170228. Its totient is φ = 85170226.

The previous prime is 85170203. The next prime is 85170233. The reversal of 85170227 is 72207158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85170227 - 2²⁰ = 84121651 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85170193 and 85170202.

It is not a weakly prime, because it can be changed into another prime (85170277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42585113 + 42585114.

It is an arithmetic number, because the mean of its divisors is an integer number (42585114).

Almost surely, 2^85170227 is an apocalyptic number.

85170227 is a deficient number, since it is larger than the sum of its proper divisors (1).

85170227 is an equidigital number, since it uses as much as digits as its factorization.

85170227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 85170227 is about 9228.7716950849. The cubic root of 85170227 is about 439.9762848789.

The spelling of 85170227 in words is "eighty-five million, one hundred seventy thousand, two hundred twenty-seven".